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Power Supply Methods According to Slave Unit Power Supply Types
An overview of the power supply methods for each Slave Unit power supply type is given in this section.
Refer to the CompoNet Slave Unit and Repeater Unit Operation Manual (Cat. No. W457) for details on
wiring methods.
Multi-power Supply (Round Cable I)
Supply power separately to the communications power terminals (BS+ and BS− ) and the I/O power
terminals (V+ and G− ) on each Slave Unit.
When complying with UL standards, install a
device to limit the current between the external
power supply and the Gateway Unit to 4 A or
less for the communications power supply.
Power
supply
24 VDC
Overcurrent
protection
(current limit: 4 A)
Gateway Unit
Power supply connector on Gateway Unit
Multi-power Supply (Round Cable II, Flat Cable I, or Flat Cable II)
Communications power (BS+ and BS−) is supplied from the Gateway Unit.
I/O power (V+ and G− ) is supplied separately.
When complying with UL standards, install a
device to limit the current between the external
power supply and the Gateway Unit to 4 A or
less for the communications power supply.
Power
supply
24 VDC
Overcurrent
protection
(current limit: 4 A)
Power supply connector on Gateway Unit
CompoNet Gateway Unit for CC-Link Operation Manual
BS+
BDH
BDL
Gateway Unit
BS+
BDH
BDL
Slave Unit
Communications
power supply terminals
BD
BD
BS
BS
−
H
L
+
Round Cable I
BS−
When complying with UL
standards, install a device to limit
the current between the external
power supply and the Gateway
Unit to 4 A or less for the
communications power supply.
Slave Unit
Communications power
supply terminals
BD
BD
BS
BS
−
H
L
+
BS−
Wiring and Settings
I/O power
supply terminals
I/O power
V
G
supply
24 VDC
Overcurrent
protection
(current limit: 4 A)
Communica-
tions power
supply
24 VDC
I/O power supply
terminals
I/O power
V
G
supply
24 VDC
Round Cable II,
Flat Cable I, or
Flat Cable II
3
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